Canon NB-4L battery adapter

As I wanted to do timelapses with my Canon Ixus 220 HS (also known as Powershot ELPH 300 HS) using the great CHDK, I realized that the standard battery only lasts for 2.5 hours.

While searching the internet, I found that there is an existing solution by Canon with the major downside that it costs about 90€.

So I fired up openscad and came up with this battery dummy for the NB-4L battery. Using a female servo connector and some desoldering wick for the contacts, you are able to power your